MetaMask

Short description: Software cryptocurrency wallet

MetaMask

Developer(s)| ConsenSys
Initial release| 2016; 7 years ago (2016)
Operating system| iOS
Android
Platform| Browser extension
Mobile app
Type| Cryptocurrency wallet
Website| metamask.io

MetaMask is a software cryptocurrency wallet used to interact with the Ethereum blockchain. It allows users to access their Ethereum wallet through a browser extension or mobile app, which can then be used to interact with decentralized applications.[1][2] MetaMask is developed by ConsenSys Software Inc., a blockchain software company focusing on Ethereum-based tools and infrastructure.[3][4]

## Contents

* 1 Overview
* 2 History
* 3 Criticism
* 4 References

## Overview

MetaMask allows users to store and manage account keys, broadcast transactions, send and receive Ethereum-based cryptocurrencies and tokens, and securely connect to decentralized applications through a compatible web browser or the mobile app's built-in browser.[5][6]

Websites or other decentralized applications are able to connect, authenticate, and/or integrate other smart contract functionality with a user's MetaMask wallet (and any other similar blockchain wallet browser extensions) via JavaScript code that allows the website to send action prompts, signature requests, or transaction requests to the user through MetaMask as an intermediary.[citation needed]

The application includes an integrated service for exchanging Ethereum tokens by aggregating several decentralized exchanges (DEXs) to find the best exchange rate. This feature, branded as MetaMask Swaps, charges a service fee of 0.875% of the transaction amount.[7]

(As of November 2021), MetaMask's browser extension had over 21 million monthly active users, according to Bloomberg News .[8]

## History

MetaMask was created by ConsenSys in 2016.[3]

Prior to 2019, MetaMask had only been available as a desktop browser extension for Google Chrome and Firefox browsers. Given the popularity of MetaMask among cryptocurrency users, and its lack of an official mobile app for several years, instances of malicious software posing as MetaMask became problematic for Google in regulating its Chrome Web Store and Google Play platforms.[9][10][11] In one instance, Google Play unintentionally removed MetaMask's official beta app before reverting the decision a week later on January 1, 2020.[12]

Starting in 2019, MetaMask began releasing mobile app versions for closed beta testing, followed by their official public release for iOS and Android in September 2020.[2][5]

During October 2020, MetaMask Swaps, a built-in DEX aggregation service was added to the desktop extension. The product became available on mobile devices in March 2021.[7]

## Criticism

While MetaMask and other "Web3" focused applications aim to decentralize control over personal data and increase user privacy, critics have pointed to the potential for MetaMask's browser extension to leak identifiable information to data collection networks and web trackers as a fundamental flaw.[3][13]

## References

1. ↑ Johnson, Steven (2018-01-16). "Beyond the Bitcoin Bubble (Published 2018)" (in en-US). The New York Times. ISSN 0362-4331. https://www.nytimes.com/2018/01/16/magazine/beyond-the-bitcoin-bubble.html.
2. ↑ 2.0 2.1 Schroeder, Stan (2 September 2020). "Crypto wallet MetaMask finally launches on iOS and Android, and it supports Apple Pay" (in en). https://mashable.com/article/metamask-ios-android/.
3. ↑ 3.0 3.1 3.2 EST, Adam Piore On 11/19/18 at 5:09 PM (2018-11-19). "How blockchain technology could help us take back our data from Facebook, Google and Amazon" (in en). https://www.newsweek.com/2018/11/16/new-internet-blockchain-technology-could-help-us-take-back-our-data-facebook-1222860.html.
4. ↑ Popper, Nathaniel (2016-03-28). "Ethereum, a Virtual Currency, Enables Transactions That Rival Bitcoin's (Published 2016)" (in en-US). The New York Times. ISSN 0362-4331. https://www.nytimes.com/2016/03/28/business/dealbook/ethereum-a-virtual-currency-enables-transactions-that-rival-bitcoins.html.
5. ↑ 5.0 5.1 Leising, Matthew (2 September 2020). "MetaMask's Blockchain Mobile App Opens Doors For Next-Level Web". Bloomberg News. https://www.bloomberg.com/news/articles/2020-09-02/metamask-s-blockchain-mobile-app-opens-doors-for-next-level-web. Retrieved 3 December 2020.
6. ↑ Jaffe, Justin (29 March 2018). "How to keep your cryptocurrency safe" (in en). Cnet Money (CNET). https://www.cnet.com/how-to/how-to-keep-your-cryptocurrency-safe/.
7. ↑ 7.0 7.1 Schroeder, Stan (2021-03-17). "Crypto wallet MetaMask now lets you swap tokens on your phone" (in en). https://mashable.com/article/metamask-swaps.
8. ↑ "Third Point, Marshall Wace Back Crypto Firm ConsenSys". Bloomberg.com. 17 November 2021. https://www.bloomberg.com/news/articles/2021-11-17/third-point-marshall-wace-back-crypto-firm-consensys-web3-push.
9. ↑ Goodin, Dan (2019-02-09). "Google Play caught hosting an app that steals users' cryptocurrency" (in en-us). https://arstechnica.com/information-technology/2019/02/google-play-caught-hosting-an-app-that-steals-users-cryptocurrency/.
10. ↑ Cimpanu, Catalin. "Exclusive: Google removes 49 Chrome extensions caught stealing crypto-wallet keys" (in en). ZDNet. https://www.zdnet.com/article/exclusive-google-removes-49-chrome-extensions-caught-stealing-crypto-wallet-keys/.
11. ↑ Varshney, Neer (2018-06-12). "Google should learn from Apple's cryptocurrency guidelines" (in en-us). https://thenextweb.com/hardfork/2018/06/12/apple-google-cryptocurrency/.
12. ↑ Beedham, Matthew (2020-01-03). "Google lifts ban on Ethereum wallet app it thought was mining cryptocurrency" (in en-us). https://thenextweb.com/hardfork/2020/01/03/google-lifts-ban-ethereum-wallet-app-metamask-mining-cryptocurrency/.
13. ↑ Canellis, David (2019-03-22). "PSA: MetaMask reveals your Ethereum address to sites you visit, here's how to hide it" (in en-us). https://thenextweb.com/hardfork/2019/03/22/metamask-ethereum-privacy-address/.

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